eth

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

n. Variant of edh.

from Wiktionary, Creative Commons Attribution/Share-Alike License

n. A letter (capital Ð, small ð) introduced into Old English to represent its dental fricative, then not distinguished from the letter thorn, no longer used in English but still in modern use in Icelandic, Faroese, and phonetics to represent the voiced dental fricative "th" sound as in the English word then.

Etymologies

The sound /ɛ/ followed by the sound of the letter, by analogy with other letter names, such as those of f, l, and m. (Wiktionary)

Examples

Basically the only "medieval" joke is ending every verb in "eth," such as in the phrase, "I bloggeth about SpongeBob and expresseth my horror at how bad the episode was."

Ethoxylated chemicals: Chemicals such as sodium laureth sulfate, PEGs, ceteareth-20 and other chemicals with "eth" in the name are often contaminated with 1,4 dioxane, a probable human carcinogen that may also be toxic to the kidneys, brain and respiratory system, according to the California EPA.